just upgraded my Windows Vista machine to Vista SP1 RTM and found the changes while I was terminal-servicing to my server machines.
I used console terminal service a lot to get the physical console control to do things. after upgraded to Vista SP1, found that it would no longer be able to use /console to connect to console terminal of remote machines anymore.
later found this post from Terminal Service Team Blog that states the changes after RDC 6.1, which was installed while Vista SP1 installation, that /console had depreciated and for backward compatibility, use /admin in RDC 6.1 to connect to console terminal of Windows Server 2003.
so, have to change my RDC shortcut for console connections from using /console switch to /admin .